模糊控制A/O脱氮工艺内循环回流量和外碳源投加量

CIESC Journal

• BIOTECHNOLOGY & BIOENGINEERING • 上一篇下一篇

模糊控制A/O脱氮工艺内循环回流量和外碳源投加量

马勇^a; 彭永臻^a,b; 王淑莹^b; 王晓莲^a

^a School of Municipal and Environmental Engineering, Harbin institute of Technology, Harbin, Box 2607, 150090, China
^b Key Laboratory of Beijing for Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2005-04-28 发布日期:2005-04-28
通讯作者: 马勇

Fuzzy Control of Nitrate Recirculation and External Carbon Addition in A／O Nitrogen Removal Process

MA Yong^a; PENG Yongzhen^a,b; WANG Shuying^b; WANG Xiaolian^a

^a School of Municipal and Environmental Engineering, Harbin institute of Technology, Harbin, Box 2607, 150090, China
^b Key Laboratory of Beijing for Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022, China

Received:1900-01-01 Revised:1900-01-01 Online:2005-04-28 Published:2005-04-28
Contact: MA Yong

摘要/Abstract

摘要： Nitrogen and phosphorous concentrations of effluent water must be taken into account for the design and operation of wastewater treatment plants. In addition, the requirement for effluent quality is becoming strict.Therefore, intelligent control approaches are recently required in removing biological nutrient. In this study, fuzzy control has been successfully applied to improve the nitrogen removal. Experimental results showed that a close relationship between nitrate concentration and oxidation-reduction potential (ORP) at the end of anoxic zone was found for anoxic/oxic (A/O) nitrogen removal process treating synthetic wastewater. ORP can be used as online fuzzy control parazneter of nitrate recirculation and external carbon addition. The established fuzzy logic controller that includes two inputs and one output can maintain ORP value at-86 mV and -90 mV by adjusting the nitrate recirculation flow and external carbon dosage respectively to realize the optimal control of nitrogen removal, improving the effluent quality and reducing the operating cost.

关键词: 脱氮工艺;模糊控制系统;硝酸盐;回收技术;碳;富营养化;环境污染;水处理工艺;厌氧／耗氧处理技术

Abstract: Nitrogen and phosphorous concentrations of effluent water must be taken into account for the design and operation of wastewater treatment plants. In addition, the requirement for effluent quality is becoming strict.Therefore, intelligent control approaches are recently required in removing biological nutrient. In this study, fuzzy control has been successfully applied to improve the nitrogen removal. Experimental results showed that a close relationship between nitrate concentration and oxidation-reduction potential (ORP) at the end of anoxic zone was found for anoxic/oxic (A/O) nitrogen removal process treating synthetic wastewater. ORP can be used as online fuzzy control parazneter of nitrate recirculation and external carbon addition. The established fuzzy logic controller that includes two inputs and one output can maintain ORP value at-86 mV and -90 mV by adjusting the nitrate recirculation flow and external carbon dosage respectively to realize the optimal control of nitrogen removal, improving the effluent quality and reducing the operating cost.

Key words: fuzzy control, nitrate recirculation, external carbon dosage, A/O nitrogen removal process

马勇,彭永臻,王淑莹,王晓莲. 模糊控制A/O脱氮工艺内循环回流量和外碳源投加量[J]. CIESC Journal.

MA Yong, PENG Yongzhen, WANG Shuying, WANG Xiaolian. Fuzzy Control of Nitrate Recirculation and External Carbon Addition in A／O Nitrogen Removal Process[J]. .

模糊控制A/O脱氮工艺内循环回流量和外碳源投加量

Fuzzy Control of Nitrate Recirculation and External Carbon Addition in A／O Nitrogen Removal Process

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